What to do when a jealous hater tries to bring you down? :(?

Just ignore it all. Sooner or later she will stop. If she sees that it doesn't bother you, then she wont do it anymore. And if you really meant something to those important people, they wouldn't believe her. Just ignore it all and stay calm. This has happened to me, and I did exactly that, and it all stopped within a day. Good luck!